|Número de publicación||US3189027 A|
|Tipo de publicación||Concesión|
|Fecha de publicación||15 Jun 1965|
|Fecha de presentación||29 Nov 1962|
|Fecha de prioridad||29 Nov 1962|
|Número de publicación||US 3189027 A, US 3189027A, US-A-3189027, US3189027 A, US3189027A|
|Inventores||Bartlett Jr Roscoe G|
|Cesionario original||Bartlett Jr Roscoe G|
|Exportar cita||BiBTeX, EndNote, RefMan|
|Citas de patentes (4), Citada por (164), Clasificaciones (12)|
|Enlaces externos: USPTO, Cesión de USPTO, Espacenet|
June 15, 1965 BARTLETT, JR 3,189,027
ANTI-SUFFOCANT APPARATUS FOR OXYGEN SUPPLY SYSTEMS Filed Nov. 29, 1962 OXYGEN 44 SUPPLY INVENTOR.
Roscoe G. B lefl, Jr. BY
gasping will likewise open this valve.
United States Patent Ofiice 3,189,927 Patented June 15, 1965 3,139,027 ANTI-SUFFQCANT APPARATUS FQR OXYGEN SUPPLY SYSTEMS Roscoe G. Bartlett, Jr., Lime Kiln, Md.
Filed Nov. 29, 1962, Ser. No. 241,083 Claims. (Cl. 128-142) (Granted under Title 35, U.S. Code (1952), see. 266) The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.
The present invention relates generally to apparatus for sustaining flight personnel exposed to environments the oxygen content to which is insufficient for their normal respiratory requirements and, more particularly, to a safety attachment for an oxygen pressure mask which automatically permits the wearer to inspire air from the local atmosphere when his oxygen supply has been expended. V
In one type of conventional oxygen supply system for high altitude use, oxygen in one mode of operation is delivered to the facemask under pressure to ease the wearers respiratory efforts. However, when the oxygen supply is depleted, the individual usually must remove his mask before he can inspire air from the surrounding atmosphere. If he is unconscious or otherwise disabled at this time, he may, of course, suffocate, notwithstanding the fact that he may be in an environment which can satisfy his oxygen requirements.
It is accordingly a primary object of the present invention to provide an attachment for a facernask of the type used in an oxygen supply system which automatically switches the mask from the oxygen source when the supply of oxygenis exhausted to the local atmosphere.
Another object of the present invention is to provide a lightweight, compact, safety bypass valve that can be mounted on a conventional oxygen-pressure facemask so as to automatically couple the mask to the local environment when the oxygen supply is depleted.
A yet still further object of the present invention is to provide apparatus for use with an oxygen mask which functions even when the individual wearing the mask is unconscious to switch the input torthe mask from the oxygen supplywhen this supply is used up to the local atmosphere.
A yet still further object of the present invention is to provide a safety. feature for an oxygen mask used in a pressure-breathing system which responds to the wearers respiratory action to effectively couple the mask to the local atmosphere when the oxygen supply in thesystem is expended.
Briefly and in somewhat general terms, the above objects are realized in one embodiment of the invention by attaching a lightweight, compact, safety bypass valve to the breathing tube section of a facemask designed for pressure breathing. As long as there is a flow of oxygen from the oxygen supply source into the facemask, this bypass valve remains in its closed position. However, when the oxygen supply is exhausted, the wearer's inhalation elforts by themselves automatically open the bypass valve, thereby coupling the local atmospheric environment to the breathing tube section of the facemask. If the individual in unconscious at this critical time, his A snap-acting mechanism is included in the valve assembly to give it a positive type of action. Additionally, the apparatus has a reset device which permits the wearer to manually control the condition of the bypass valve.
Other objects, advantages and novel features of the invention will become apparent from the following detailed description of the invention when considered in con junction with the accompanying drawings wherein:
FIG. 1 schematically illustrates one embodiment of the present invention applied to a facemask designed for pressure breathing; and
FIG. 2 shows the details of a part of the snap-acting feature of the safety bypass valve of FIG. 1.
Referring now to FIG. 1 of the drawings, which illustrates the application of the present invention to an oxygen supply system for flight personnel, a conventional facemask 1, designed for pressure breathing and fabricated of molded rubber, .for example, is provided at a lower portion thereof with a flexible breathing tube section 2 and an exhaust port 3. In the particular mask configuration selected for illustration, only the nose and mouth of the wearer are covered. However, it should be readily appreciated that additional coverage may be included for the complete head of the wearer. Breathing tube section 2 in one design is closed at'its remote end by a wall 4 which has a central aperture formed therein through which passes nozzle 6 of a conventional pressure-compensated exhaust valve 7.
In one prior art construction, this exhaust valve has as its control device a piston 11 which is normally biased by coil spring 12 to its closed position up against valve seat 13. Nozzle 6 leads to the bottom side of this piston and, as will be seen hereinafter, prevents this valve from opening except during the exhalation portion of the wearers breathing cycle. This valve is mounted in a transverse wall 8 which partitions off the bottom portion of the mask from the facemask area. Also built into this mask are a pair of air passageways 9, only one of which is shown, which lead from breathing tube section 2 into the face mask area. Each of these passageways terminates in a nonloaded check valve which allows only acne-way gas flow into the facemask area.
In the normal operation of the oxygen supply system, oxygen from the high pressure supply source, after a pressure reduction, flows into breathing tube section 2 through passageways 9 and check valves 10 into the respiratory system of the individual wearing the facemask. During the expiratory portion of the latters breathing cycle, his discharge opens exhaust valve 7 and passes via exit port 3 out into the atmosphere.
The anti-suffocant bypass valve of the present invention, generally represented by reference character 14, is attached to the breathing tube section 2 of the facemask by a suitable clamping device 15. Bypass valve 14 includes a housing 16 which is closed at its top portion by a cover plate 17 that has a plurality of ports 18 cut therethrough at one location and a single aperture 19 formed therein at a second location. Clamping device establishes an airtight fit between the lower portion of breathing tube 2 and a sleeve 16 which locks into the latter aperture.
Mounted on the top surface of cover plate 17 is a sleeve 20 whose inner top wall portion is threaded 'to receive a cap 21. This sleeve has an external flange 22 formed at its lower end which is locked under a clamping plate 23 that is fastened by suitable screws 24 to the top wall of housing 16. Closure cap 21 has a plurality of apertures 25 and a centralaperture 26 formed in its central top wall portion. Passing through the latter aperture and through cover plate 17 is a push or reset rod 27 which is secured at a point intermediate its length to a circular piston 28.
Also positioned within sleeve 20 is an elastic bellows 29 which fits into a cutout portion formed in the bottom rim of cap 21. When piston 29 is in its upper or closed position, it compresses bellows 29 and forms an airtight seal with the bottom end thereof. A bias spring 30 is also included in the apparatus with its top portion abutting the bottom wall of cap 21 and its bottom portion resting on piston 29. This spring, which controls the opening pressure of the safety bypass valve, has insufiicient force by itself to move piston 23 downwardly to unseat it from element 29 whenever a positive pressure exists within housing 16.
It would be pointed out that push rod 27 is free to move up and down through the apertures in closure cap 21 and cover plate 17 and, when it-does so, piston 28 moves along with it. When piston 28 moves downwardly from the position shown, the contact between its peripheral surface and the lower rim of bellows 29 is not immediately broken because of the expansion of bellows 29. This action, as will be seen hereinafter, insures the positive opening of the bypass valve,
When piston 28 finally does break contact with the lower rim of bellows 29, air can be drawn from the outside atmosphere through ports 25 into the top half of sleeve 20, around the rim of piston 28 into the bottom half of the sleeve, and thence via apertures 18 into the central portion of housing 16. From here it can pass directly into the breathing tube section 2 and the face mask area.
As best shown in FIG. 2, push rod 27 has a slot 31 cut therethrough near its bottom end. Passing through this slot and extending a short distance beyond is a lever 32 which is mounted for pivotable movement about a shaft 33 journalled into a pair of ears 34 formed in a post 35 that extends upwardly from the bottom wall of housing 16. Lever 32 carries at its remote end a cross bar 36, and a pair of springs 37 under tension are connected between the ends of this bar and a pair of extension arms 38 projecting from both sides of post 35. It will be recognized that lever 32 and its affiliated spring components constitute a snap-acting mechanism that positively displaces piston 28 to either its open or closed condition once this lever passes over its center or horizontal position.
Secured to the bottom wall of housing 16 is a pressure reducer 39 which functions to reduce the oxygen pressure to a level that is not injurious to the respiratory system of the individual. Pressure reducer 39, which is of conventional design, produces a low pressure flow from its output side into the central portion of housing 16 via a plurality of apertures 41 and a smaller flow into nozzle 6 of pressure-compensated valve 7 via its nozzle 42 and a flexible tubing 43 connected therebetween. This last connection provides the pressure compensation for exhaust valve 7 and prevents the oxygen normally flowing into the facemask area via breathing tube section 2, passageways 9 and check valves from depressing piston 11 and thus passing out unused into the atmosphere via exit port 3.
The operation of the apparatus of FIG. 1 is as follows: To prepare the equipment for use, push rod 27 is first moved to the position shown, thereby closing the antisuffocant bypass valve 14. When pressure or demand breathing is initiated, oxygen flows from source 44 via line 40, out of ports 41 into the breathing tube section 2 of the facemask and, thence, via passageways 9 and check valves 10 into the respiratory system of the individual. During the expiratory portion of his breathing cycle, his discharge opens pressure-compensated valve 7 and passes via port 3 out into the atmosphere. The oxygen flow from ports 41 also maintains a positive pressure within the central portion of housing 16, and this pressure, acting upon the bottom surface of piston 28, insures the closed condition of bypass valve 14. Thus, the oxygen breathing system is isolated from the atmosphere except during the exhalation portion of each breathing cycle.
When the oxygen source is depleted, the individual depresses push rod 27 downwardly to open bypass valve 14 and allow air from the outside environment to enter the facemask to satisfy his breathing demands. However, if he is unconscious or otherwise disabled at this time, his continued breathing action will also bring about the same result because the negative pressure developed by his gasping will first open check valves 10 and then bypass valve 14. More paiticularly, when his breathing efforts create a negative pressure within housing 16, piston 28 is pulled downwardly until lever 32 passes just beyond its center or horizontal position. Spring 30, of course, assists this action. As piston 28 moves downwardly, elastic bellows 29 expands and, in effect, follows the piston to hold the valve closed until lever 32 moves beyond the above position. If this bellows were not present, as soon as piston 28 moved off its seat the pressure would fall and the valve would not go over center to stay open. Once lever 32 moves beyond the over center position, springs 37 act to snap piston 28 quickly to its completely open position and lock it in this condition. With bypass valve 14 now open, air from the outside can be drawn via ports 25 and 18 into housing 16 and thence via breathing tube section 2 and facemask 1 into the individuals respiratory system.
Obviously many modifications and variations of the present invention are possible in the light of the above teachings. It is therefore to be understood that within the scope of the appended claims the invention may be practiced otherwise than as specifically described.
What is claimed is:
1. An anti-sulfocant safety valve for an oxygen supply system of the type wherein oxygen from a supply source enters a supply line leading into the interior of a facemask comprising, in combination,
a sleeve connected to an exterior wall of said chamber and having one end thereof communicating with the interior of said chamber;
a piston positioned within said sleeve and having a diameter less than the interior diameter of said sleeve:
an over-center, snap-acting switching mechanism connected to said chamber and to said piston for moving said piston between an upper and lower position within said sleeve;
a bellows open at both ends thereof;
said bellows having one end thereof connected to the top of said sleeve and the other end extending downwardly to a position slightly beyond the mid-point between the upper and lower positions of said piston whereby said bellows contacts said piston to form an airtight seal therewith from the upper position of said piston to a position slightly beyond said midpoint and is spaced from said piston When said piston in in its lower position,
and means defining an air passageway between said chamber, said supply source and said supply line whereby whenever a negative pressure is created in said supply line in response to the inhalation efforts of an individual wearing said facemask, said piston is drawn downwardly from its upper position until said over-center, snap-acting switching mechanism suddenly activates it to its lower position whereby air from the atmosphere can thereafter be drawn through said sleeve and into said chamber for use by the individual wearing said facemask.
2. In an arrangement as defined in claim 1,
a push-rod connected to the top of said piston,
said push-rod extending beyond the other end of said sleeve for permitting said piston to be manually moved between its upper and lower positions with said sleeve.
3. In an arrangement as defined in claim 1,
a closure cap covering the other end of said sleeve,
said closure cap being provided with a multiplicity of apertures which permit air from the atmosphere to be drawn into said sleeve,
said closure cap having a circular recess cut in the rim portion thereof for accommodating the end of said bellows which is connected to the top of said sleeve.
4. In an arrangement as defined in claim 3,
a helical spring disposed between said closure cap and the top of said piston,
said helical spring being maintained under compression when said piston is in its upper position and having insufi'icient force to displace said piston to its lower position whenever the pressure within said chamber is greater than the adjacent atmospheric pressure.
5. An anti-sutfocant safety valve for an oxygen supply system of the type wherein oxygen from a supply source flows into a supply line leading into the interior of a facemask comprising, in combination,
a sleeve extending upwardly from an exterior wall of said chamber with one end of said sleeve communicating with the interior of said chamber;
a piston accommodated within said sleeve;
said piston having a diameter that is less than the interior diameter of said sleeve whereby an air passageway exists between the inner wall of said sleeve and the rim of said piston;
an over-center, snap-acting switching mechanism mounted in said chamber and connected to said piston for displacing said piston between an upper and a lower position within said sleeve;
a flexible, tubular bellows disposed within said sleeve,
one end of said bellows being connected to an inner wall portion of said sleeve adjacent the other end' thereof,
- 6 a the other end of said bellows terminating at a position which is slightly beyond the mid-point between the upper and lower positions of said piston whereby said other end of said bellows contact said piston to form an airtight seal therewith while .said piston is in its upper position and as it moves to said. position slightly beyond said mid-point and whereby said bellows is spaced from said piston when said piston is in its lower position; and means for coupling said chamber to said supply line and said supply source whereby whenever a negative pressure is created in said chamber in response to the inhalation eiforts of an individual wearing said facemask said piston is drawn downwardly from its upper position until said over-center, snap-acting switching mechanism suddenly activates it to its lower position whereby air from the atmosphere can thereafter be drawn through said sleeve and into said chamber for use by said individual.
References Cited by the Examiner UNITED STATES PATENTS 1,610,500 12/26 Eggleston 25 l280 X 2,416,411 2/47 Sharbaugh et a1 128146 2,598,525 5/52 Fox 128-142 X 3,092,104 6/63 Cassidy l28142 30 RICHARD A. GAUDET, Primary Examiner.
|Patente citada||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US1610500 *||2 Sep 1921||14 Dic 1926||American Radiator Co||Snap valve|
|US2416411 *||10 Abr 1942||25 Feb 1947||Mine Safety Appliances Co||Facepiece|
|US2598525 *||8 Abr 1950||27 May 1952||E & J Mfg Co||Automatic positive pressure breathing machine|
|US3092104 *||21 Abr 1958||4 Jun 1963||Ling Temco Vought Inc||Safety apparatus for oxygen system|
|Patente citante||Fecha de presentación||Fecha de publicación||Solicitante||Título|
|US4064875 *||2 Jul 1976||27 Dic 1977||The Bendix Corporation||Anti-suffocation means for aircraft breathing mask|
|US4345592 *||10 Sep 1980||24 Ago 1982||A-T-O Inc.||Pressure demand regulator with automatic shut-off|
|US4345593 *||6 Feb 1981||24 Ago 1982||A-T-O Inc.||Pressure-demand breathing apparatus with automatic air shut-off|
|US4606340 *||14 Jul 1983||19 Ago 1986||Figgie International Inc.||Combined pressure compensating exhalation and anti-suffocation valve|
|US4632342 *||12 Dic 1984||30 Dic 1986||Daymond, Division Of Redpath Industries Limited||Gutter system|
|US4898174 *||3 May 1988||6 Feb 1990||Life Support Products, Inc.||Automatic ventilator|
|US5438981 *||30 Sep 1993||8 Ago 1995||Respironics, Inc.||Automatic safety valve and diffuser for nasal and/or oral gas delivery mask|
|US5647355 *||30 May 1995||15 Jul 1997||Respironics, Inc.||Automatic safety valve for respiratory equipment which is counter-balanced and self-adjusting|
|US6006748 *||16 Oct 1997||28 Dic 1999||Resmed Limited||Vent valve apparatus|
|US6029660 *||12 Dic 1997||29 Feb 2000||Resmed Limited||Substance delivery apparatus|
|US6044844 *||2 Dic 1997||4 Abr 2000||Resmed Limited||Mask and harness assembly|
|US6112746 *||31 Ene 1997||5 Sep 2000||Resmed Limited||Nasal mask and mask cushion therefor|
|US6119693 *||16 Ene 1998||19 Sep 2000||Resmed Limited||Forehead support for facial mask|
|US6123071 *||26 Sep 1996||26 Sep 2000||Resmed Limited||Facial masks for assisted respiration or CPAP|
|US6123082 *||3 Oct 1997||26 Sep 2000||Resmed Limited||Device for preventing or reducing the passage of air through the mouth|
|US6357441||16 Jul 1997||19 Mar 2002||Resmed Limited||Nasal mask and mask cushion therefor|
|US6463931||30 Jun 2000||15 Oct 2002||Resmed Limited||Forehead support for facial mask|
|US6494207||2 Dic 1997||17 Dic 2002||Resmed Limited||Harness assembly for a nasal mask|
|US6513526||21 May 1999||4 Feb 2003||Resmed Limited||Full-face mask and mask cushion therefor|
|US6557556||13 May 2002||6 May 2003||Resmed Limited||Forehead support for facial mask|
|US6561190||10 Feb 1998||13 May 2003||Resmed Limited||Mask and a vent assembly therefor|
|US6561191||1 Dic 1999||13 May 2003||Resmed Limited||Mask and a vent assembly therefor|
|US6581602||8 Feb 2002||24 Jun 2003||Resmed Limited||Nasal mask and mask cushion therefor|
|US6634358||8 May 2000||21 Oct 2003||Resmed Limited||Nasal mask cushion assembly|
|US6691708||29 Ago 2002||17 Feb 2004||Resmed Limited||Forehead support for facial mask|
|US6701927||11 Jun 2002||9 Mar 2004||Resmed Limited||Full-face mask and mask cushion therefor|
|US6718979||5 Jun 2000||13 Abr 2004||Dhd Healthcare Corporation||Oxygen mask assembly|
|US6860269||4 Oct 2002||1 Mar 2005||Resmed Limited||Forehead support for facial mask|
|US6871649||6 Dic 2001||29 Mar 2005||Resmed Limited||Nasal mask cushion assembly|
|US6889692||13 Feb 2003||10 May 2005||Resmed Limited||Vent valve assembly|
|US6973929||17 Dic 2002||13 Dic 2005||Resmed Limited||Forehead support for a facial mask|
|US6997188||15 Sep 2003||14 Feb 2006||Resmed Limited||Forehead support for facial mask|
|US7000614||14 Mar 2002||21 Feb 2006||Map Medizin-Technologie Gmbh||Breathing mask arrangement and a forehead support device for same|
|US7007696||16 May 2002||7 Mar 2006||Tiara Medical Systems, Inc.||Mask cushion and method of using same|
|US7021311||7 Ene 2004||4 Abr 2006||Resmed Limited||Mask cushion and frame assembly|
|US7036508||30 Abr 2002||2 May 2006||Resmed Limited||Harness assembly for a nasal mask|
|US7059325||31 Mar 2005||13 Jun 2006||Resmed Limited||Vent assembly|
|US7069933||12 Nov 2003||4 Jul 2006||Resmed Limited||Breathing mask and mask cushion therefor|
|US7089939 *||2 Nov 2001||15 Ago 2006||Resmed Limited||Gas delivery connection assembly|
|US7100610||16 Oct 2001||5 Sep 2006||Map Medizintechnologie Gmbh||Breathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas|
|US7174893||23 Nov 2005||13 Feb 2007||Resmed Limited||Mask with anti-asphyxia valve|
|US7178527||11 Feb 2002||20 Feb 2007||Resmed Limited||Nasal mask and mask cushion therefor|
|US7185652||2 Nov 2001||6 Mar 2007||Resmed Limited||Gas delivery connection assembly|
|US7207334||10 Jun 2002||24 Abr 2007||Resmed Limited||Respiratory mask assembly|
|US7207335||12 Feb 2003||24 Abr 2007||Resmed Limited||Mask and vent assembly therefor|
|US7234466||4 Nov 2003||26 Jun 2007||Resmed Limited||Forehead support for facial mask|
|US7243651||7 Sep 2004||17 Jul 2007||Resmed Limited||Cushion and mask therefor|
|US7290546||22 Mar 2003||6 Nov 2007||Invacare Corporation||Nasal mask|
|US7318439||12 Oct 2004||15 Ene 2008||Resmed Limited||Mask assembly|
|US7320323||22 Oct 2002||22 Ene 2008||Map Medizin-Technologie Gmbh||Breathing mask device and application device and frontal support device thereof|
|US7406965||5 May 2004||5 Ago 2008||Resmed Limited||Forehead support for facial mask|
|US7472704||2 Mar 2005||6 Ene 2009||Resmed Limited||Forehead support for facial mask|
|US7487777||9 Dic 2005||10 Feb 2009||Resmed Limited||Cushion clip assembly and mask assembly having same|
|US7503327||9 Abr 2004||17 Mar 2009||Resmed Limited||Mask with integral cushion and forehead piece|
|US7610916||28 Ago 2006||3 Nov 2009||Resmed Limited||Forehead support for facial mask|
|US7621274||23 Jun 2003||24 Nov 2009||Invacare Corporation||Nasal mask|
|US7654263||2 Feb 2010||Map Medizin-Technologie Gmbh||Breathing mask arrangement and a forehead support device for same|
|US7762259||17 Dic 2007||27 Jul 2010||Resmed Limited||Mask with integral cushion and forehead piece|
|US7775209||25 Jul 2006||17 Ago 2010||Map Medizintechnologie Gmbh||Breathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas|
|US7845354||19 Nov 2002||7 Dic 2010||Resmed Limited||Mask and vent assembly therefor|
|US7861714||3 Ene 2006||4 Ene 2011||Resmed Limited||Respiratory mask assembly|
|US7882837||8 Feb 2011||Resmed Limited||Forehead support for facial mask|
|US7926487||28 Abr 2006||19 Abr 2011||Resmed Limited||Respiratory mask having gas washout vent and gas washout vent assembly for a respiratory mask|
|US7942149||5 Ene 2009||17 May 2011||Resmed Limited||Forehead support for a facial mask|
|US7942150||8 Abr 2005||17 May 2011||Resmed Limited||Nasal assembly|
|US7950392||13 Jul 2007||31 May 2011||Resmed Limited||Cushion and mask therefor|
|US7967014||25 Abr 2006||28 Jun 2011||Map Medizin-Technologie Gmbh||Application device for breathing mask arrangement|
|US7992559||28 Nov 2007||9 Ago 2011||Map Medizin-Technologie Gmbh||Breathing mask arrangement as well as an application device and a forehead support device for same|
|US8028698||17 Sep 2007||4 Oct 2011||Invacare Corporation||Breathing mask|
|US8056561||12 May 2006||15 Nov 2011||Resmed Limited||Full-face mask and mask cushion therefor|
|US8113197||7 Abr 2009||14 Feb 2012||Resmed Limited||Respiratory mask assembly|
|US8122886||27 Dic 2006||28 Feb 2012||Resmed Limited||Respiratory mask assembly with vent|
|US8186348||23 Sep 2009||29 May 2012||Resmed Limited||Forehead support for facial mask|
|US8210180||30 Jun 2010||3 Jul 2012||Resmed Limited||Mask with integral cushion and forehead piece|
|US8230855||3 Dic 2007||31 Jul 2012||Resmed Limited||Mask assembly|
|US8353294||21 Mar 2011||15 Ene 2013||Resmed Limited||Respiratory mask assembly|
|US8371301||9 Jul 2010||12 Feb 2013||Resmed R&D Germany Gmbh||Breathing mask for feeding a breathing gas to a mask user and discharge device for discharging breathing gas|
|US8402972||27 Ago 2009||26 Mar 2013||Resmed R&D Germany Gmbh||Breathing mask arrangement and a forehead support device for same|
|US8464715||14 Abr 2009||18 Jun 2013||Stephen Donald Flynn, SR.||Multipurpose therapeutic face mask|
|US8479738||20 May 2011||9 Jul 2013||Resmed R&D Germany Gmbh||Breathing mask arrangement as well as an application device and a forehead support device for same|
|US8485192||29 Jun 2012||16 Jul 2013||Resmed Limited||Cushion for patient interface|
|US8505535||23 Dic 2009||13 Ago 2013||Resmed Limited||Mask system|
|US8517023||29 Ene 2008||27 Ago 2013||Resmed Limited||Mask system with interchangeable headgear connectors|
|US8522783||16 May 2011||3 Sep 2013||Resmed Limited||Cushion and mask therefor|
|US8522784||23 Ene 2013||3 Sep 2013||Resmed Limited||Mask system|
|US8522785||5 Ago 2003||3 Sep 2013||Resmed Limited||Inextensible headgear and CPAP or ventilator mask assembly with the same|
|US8528558||15 Mar 2011||10 Sep 2013||Resmed Limited||Respiratory mask having washout vent and gas washout vent assembly for a respiratory mask|
|US8528561||18 Ene 2013||10 Sep 2013||Resmed Limited||Mask system|
|US8550081||29 Nov 2012||8 Oct 2013||Resmed Limited||Cushion for patient interface|
|US8550082||29 Nov 2012||8 Oct 2013||Resmed Limited||Cushion for patient interface|
|US8550084||27 Feb 2009||8 Oct 2013||Resmed Limited||Mask system|
|US8555885||29 Nov 2012||15 Oct 2013||Resmed Limited||Cushion for patient interface|
|US8567404||14 Nov 2012||29 Oct 2013||Resmed Limited||Cushion for patient interface|
|US8573213||14 Nov 2012||5 Nov 2013||Resmed Limited||Cushion for patient interface|
|US8573214||28 Nov 2012||5 Nov 2013||Resmed Limited||Cushion for patient interface|
|US8573215||29 Nov 2012||5 Nov 2013||Resmed Limited||Cushion for patient interface|
|US8578935||29 Nov 2012||12 Nov 2013||Resmed Limited||Cushion for patient interface|
|US8613280||14 Nov 2012||24 Dic 2013||Resmed Limited||Cushion for patient interface|
|US8613281||29 Nov 2012||24 Dic 2013||Resmed Limited||Cushion for patient interface|
|US8616211||29 Nov 2012||31 Dic 2013||Resmed Limited||Cushion for patient interface|
|US8636006||3 Ene 2007||28 Ene 2014||Resmed Limited||Mask|
|US8646450||29 Mar 2011||11 Feb 2014||Resmed Limited||Forehead support for a facial mask|
|US8667965||19 Dic 2008||11 Mar 2014||Redmed Limited||Mask cushion and frame assembly|
|US8746250||28 Ene 2013||10 Jun 2014||Resmed R&D Germany Gmbh|
|US8757162||2 Nov 2010||24 Jun 2014||Resmed Limited||Nasal assembly|
|US8794239||19 Jun 2012||5 Ago 2014||Resmed Limited||Mask with integral cushion and forehead piece|
|US8813748||10 Nov 2011||26 Ago 2014||Resmed Limited||Full-face mask and mask cushion therefor|
|US8826910||11 Feb 2013||9 Sep 2014||Resmed Limited||Mask and vent assembly therefor|
|US8833371||11 Nov 2010||16 Sep 2014||Resmed Limited||Mask and vent assembly therefor|
|US8839789||19 Mar 2012||23 Sep 2014||Resmed Limited||Mask assembly|
|US8869797||18 Abr 2008||28 Oct 2014||Resmed Limited||Cushion and cushion to frame assembly mechanism for patient interface|
|US8875710||17 May 2011||4 Nov 2014||Resmed R&D Germany Gmbh||Application device for a breathing mask arrangement|
|US8944061||15 Mar 2013||3 Feb 2015||Resmed Limited||Cushion to frame assembly mechanism|
|US8960196||29 May 2013||24 Feb 2015||Resmed Limited||Mask system with interchangeable headgear connectors|
|US8997739||17 Abr 2006||7 Abr 2015||Resmed Limited||Vent valve apparatus|
|US9027556||23 Ene 2013||12 May 2015||Resmed Limited||Mask system|
|US9072853||15 Nov 2010||7 Jul 2015||Resmed Limited||Forehead pad for respiratory mask|
|US9119931||31 Jul 2014||1 Sep 2015||Resmed Limited||Mask system|
|US9144656||21 Jun 2013||29 Sep 2015||Resmed R&D Germany Gmbh||Breathing mask arrangement as well as an application device and a forehead support device for same|
|US9220861||29 Dic 2010||29 Dic 2015||Resmed Limited||Forehead support for facial mask|
|US9227033||14 Feb 2012||5 Ene 2016||Resmed Limited||Respiratory mask assembly|
|US9248251||1 Jul 2014||2 Feb 2016||Resmed Limited||Mask with integral cushion and forehead piece|
|US20020023649 *||2 Nov 2001||28 Feb 2002||Resmed Limited||Gas delivery connection assembly|
|US20020023650 *||2 Nov 2001||28 Feb 2002||Resmed Limited||Gas delivery connection assembly|
|US20020153012 *||10 Jun 2002||24 Oct 2002||Gunaratnam Michael K.||Respiratory mask assembly|
|US20030019495 *||16 May 2002||30 Ene 2003||Palkon David J.||Mask cushion and method of using same|
|US20030034034 *||4 Oct 2002||20 Feb 2003||Resmed Limited||Forehead support for facial mask|
|US20030221691 *||16 Oct 2001||4 Dic 2003||Achim Biener|
|US20040045550 *||14 Mar 2002||11 Mar 2004||Bernd Lang||Breathing mask arrangement and a forehead support device for same|
|US20040060561 *||15 Sep 2003||1 Abr 2004||Resmed Limited||Forehead support for facial mask|
|US20040094159 *||12 Nov 2003||20 May 2004||Resmed Limited||Breathing mask and mask cushion therefor|
|US20040134497 *||7 Ene 2004||15 Jul 2004||Resmed Limited||Mask cushion and frame assembly|
|US20040182398 *||23 Jun 2003||23 Sep 2004||Tom Sprinkle||Nasal mask|
|US20050005940 *||9 Abr 2004||13 Ene 2005||Resmed Limited||Mask with integral cushion and forehead piece|
|US20050022818 *||7 Sep 2004||3 Feb 2005||Resmed Limited||Cushion and mask therefor|
|US20050022820 *||5 May 2004||3 Feb 2005||Kwok Philip R.||Forehead support for facial mask|
|US20050139219 *||2 Mar 2005||30 Jun 2005||Resmed Limited||Forehead support for facial mask|
|US20050211252 *||13 May 2005||29 Sep 2005||Map Medizin-Technologie Gmbh||Breathing mask arrangement and a forehead support device for same|
|US20060011202 *||19 Ago 2005||19 Ene 2006||Resmed Limited||Forehead support for facial mask|
|US20060076017 *||23 Nov 2005||13 Abr 2006||Resmed Limited||Mask with anti-asphyxia valve|
|US20060107960 *||3 Ene 2006||25 May 2006||Resmed Limited||Respiratory mask assembly|
|US20060130843 *||9 Dic 2005||22 Jun 2006||Resmed Limited||Cushion clip assembly and mask assembly having same|
|US20060185674 *||17 Abr 2006||24 Ago 2006||Resmed Limited||Vent valve apparatus|
|US20060196509 *||28 Abr 2006||7 Sep 2006||Resmed Limited||Respiratory mask having gas washout vent & gas washout vent assembly for a respiratory mask|
|US20070107735 *||3 Ene 2007||17 May 2007||Resmed Limited||Mask|
|US20070261697 *||13 Jul 2007||15 Nov 2007||Resmed Limited||Cushion and mask therefor|
|US20080066761 *||17 Sep 2007||20 Mar 2008||Invacare Corporation||Breathing mask|
|US20080092899 *||17 Dic 2007||24 Abr 2008||Resmed Limited||Mask with integral cushion and forehead piece|
|US20090114227 *||19 Dic 2008||7 May 2009||Resmed Limited||Mask cushion and frame assembly|
|US20090114231 *||5 Ene 2009||7 May 2009||Resmed Limited||Forehead support for a facial mask|
|US20090188505 *||30 Jul 2009||Resmed Limited||Respiratory mask assembly|
|US20090260628 *||22 Oct 2009||Flynn Sr Stephen Donald||Multipurpose therapeutic face mask|
|US20100012129 *||23 Sep 2009||21 Ene 2010||Resmed Limited||Forehead support for facial mask|
|US20110000491 *||30 Jun 2010||6 Ene 2011||Resmed Limited||Mask with integral cushion and forehead piece|
|US20110094517 *||28 Abr 2011||Resmed Limited||Forehead support for facial mask|
|US20110174311 *||21 Jul 2011||Resmed Limited||Forehead support for a facial mask|
|US20110226254 *||22 Sep 2011||Map Medizin-Technologie Gmbh||Breathing mask arrangement as well as an application device and a forehead support device for same|
|USD423096||25 Ago 1997||18 Abr 2000||Resmed Limited||Nasal mask cushion|
|USD428987||25 Ago 1997||1 Ago 2000||Resmed Limited||Nasal mask shell|
|USD435650||25 Ago 1997||26 Dic 2000||Resmed Limited||Combined nasal mask shell and cushion|
|USD498529||14 Ene 2003||16 Nov 2004||Resmed Limited||Portion of a cushion for use with a mask assembly in the application of continuous positive airway pressure (CPAP)|
|EP1797925A1 *||12 Jun 2002||20 Jun 2007||Starmed S.p.A.||Helmet for artificial respiration without the aid of masks|
|WO1989010771A1 *||3 May 1989||16 Nov 1989||Life Support Products Inc||Automatic ventilator|
|WO2008114235A1 *||18 Mar 2008||25 Sep 2008||Catesby Olivia||Oxygen mask|
|Clasificación de EE.UU.||128/205.24, 137/456, 251/280, 128/204.25|
|Clasificación internacional||A62B9/00, A62B7/00, A62B7/12, A62B9/02|
|Clasificación cooperativa||A62B7/12, A62B9/02|
|Clasificación europea||A62B9/02, A62B7/12|